European shares traditionally yield more than US ones of otherwise equivalent earning power. Tax law is part of it. But part of it is Americans have somehow come to value 'innovation' as "better" than 'income'. The higher yielding shares in London and Frankfurt among large caps tend to be mature, slow growth, cash flow gushing businesses. They often have medium to wide "moats" and can be expected to trail the broad market over long periods of time but with much lower volatility.
The same is true of the higher yielding sectors among securities listed in NY and Chicago. You give up growth if you focus on income. For some reason, a lot of people want to be purists and hyper focus on growth or income instead of having some of both. It becomes especially nonsensical when people don't consider the need to adjust their bond allocation to reflect the inverse of their Sharpe ratio.
Put another way, Efficient Market Hypothesis suggests that if the market prices a stock for a "high" yield, it is signaling expectations its growth will be lower than comparable peers with a lower current yield.
Not enough has been written, IMO, about using a more growth oriented portfolio in early accumulation phase and tilting more towards income oriented investing as retirement date approaches. People on "here" will froth at the mouth over Dr. Pfau's 'bond tent' but act like you can't achieve some of the same thing with asset classes other than bonds.
This next part is US centric and you might consider these as part of your US allocation. There are three types of stocks in the US that receive tax advantages in exchange for a regulatory requirement to pay out most of their funds from operations as distribution. These are Real Estate Investment Trusts (REIT) [many flavors but all real estate industry], Business Development Companies (BDC) [a sort of 'second' banking sector, specializing in loans (sometimes secured by equity) that are too large for the regional banks but too small for the Investment banks to underwrite bonds for], and Master Limited Partnerships (MLP) [resource sectors, like midstream oil and gas, timber, productive farmland, mining projects, etc.] All of these traditionally trail the broad market return of the S&P but with much higher current yields. Note that MLPs do not pay a '1099' distribution for tax purposes, you will be issued as US IRS "K-1" (and it is a freaking HASSLE, that has prompted to me exit all MLP holdings).